Writing instrument



FIG. 1 is a front, right, and top persepective view of an ornamental design for a writing instrument according to the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view of a writing instrument as in FIG. 1 in an exemplary use position;

FIG. 8 is a front, right, and top perspective view of an ornamental design for a translucent writing instrument according to the present invention;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 12 is a top plan view thereof;

FIG. 13 is a bottom plan view thereof; and

FIG. 14 is a perspective view of a writing instrument as in FIG. 8 in an exemplary use position.

FIG. 15 is a front, right, and top perspective view of an ornamental design for a second embodiment of a translucent writing instrument according to the present invention;

FIG. 16 is a front elevational view thereof;

FIG. 17 is a rear elevational view thereof;

FIG. 18 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 19 is a top plan view thereof;

FIG. 20 is a bottom plan view thereof; and,

FIG. 21 is a perspective view of a writing instrument as in FIG. 15 in an exemplary use position.

All portions shown in broken lines are environmental and illustrative only and form no part of the claimed design. 

The ornamental design for a writing instrument, as shown and described. 